@InProceedings{zang05iwssip, author = {D. Zang and G. Sommer}, title = {An operator for the analysis of superimposed intrinsically two dimensional patterns}, booktitle = {12th International Workshop on Systems, Signals and Image Processing, Chalkida, Greece, 22.-24.9.05}, Verlag = {Inderscience Publishers, Gen\`{e}ve}, Editors = {D.A. Karras and S. Voliotis and M. Rangoussi and A. Kokkosis}, year = 2005, pages = {77-81} }